Labor and the Australian Democrats are demanding details of a trust fund reportedly set up by federal Workplace Relations Minister Tony Abbott in the late 1990s to fund legal cases against the One Nation Party.

Federal Treasurer Peter Costello says any involvement of Workplace Relations Minister Tony Abbott in bringing about the case against jailed One Nation founder Pauline Hanson is immaterial and part of politics.

The family of jailed former One Nation leader Pauline Hanson says she is holding up well in prison and is hoping her appeal against her three-year sentence and conviction for electoral fraud will be successful.